BUG - [RPi] XBMC restarts when starting LiveTV or Radio

Testing on OpenElec Testbuild http://forum.xbmc.org/showthread.php?tid...pid1349277 whenever I select a TV or Radio channel, I see it start Timeshifting on my PC in TV Server config but after about 10s of saying "Working" XBMC just restarts. I can play a Recorded TV programme fine, so it doesn't appear to be a GPU/codec issue.

No idea what is happening without log files (which will be difficult to obtain due to the reboot).
I'm using the Milhouse OpenElec builds on my RPi and it is working just fine.
Note that a possible cause for a reboot on an overclocked RPi could be a voltage drop on the 5V (that is what I had before with a cheap an too thin micro-USB cable.